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Improving Rural Early Warning Systems Through the Integration of Openbts and Jain Slee* Revista Ingenierías Universidad de Medellín Improving Rural Early Warning Systems through the Integration of OpenBTS and JAIN SLEE* Julián Eduardo Plazas** Juan Sebastián Rojas*** Juan Carlos Corrales**** Received: 31/07/2015 • Accepted: 30/06/2016 DOI: 10.22395/rium.v16n30a10 Abstract Nowadays exists a trend that combines the features of Web 2.0 services and telecommunications services known as Telco 2.0. These converged services have been successfully implemented in early warning systems providing improved agility and flexibility in service delivery. However the deployment of converged services in rural zones of developing coun- tries presents several constraints which do not allow to provide this kind of services, as the unavailability of a Next Generation Network (ngn), absence of advanced technology and lack of investment resources. This paper proposes a jain slee and OpenBTS integration architecture for early warning systems in rural zones. The implemented prototype is evaluated with a specific case study involving the deployment of Telco 2.0 warnings in Colombian coffee plantations which may be affected by coffee rust, one of the most threatening diseases in coffee production. Key words: jain slee, OpenBTS, integration, early warning system, converged services * The current proposal was supported by the program Fortalecimiento de la Red Interinstitucional de Cambio Climático y Seguridad Alimentaria - RICCLISA; specificaly by the project Servicios de generación de alertas Agroclimáticas como soporte a la toma de decisiones del sector Cafetero Colombiano - AgroCloud (WP2). This project is funded by Universidad del Cauca, CINARA, CENICAFE, CIAT, CREPIC and the program Redes de Conocimiento from COLCIENCIAS during 2013-2017. ** Ph.D student in telematics engineering, B.S. in electronics and telecommunications engineering, Grupo de Ingeniería Telemática, Universidad del Cauca, Popayán, Colombia, Carrera 6 B # 28 BN 16, Popayán–Cauca, Tel: (+57-2) 8367077, E-mail: [email protected] *** Ph.D student in telematics engineering, B.S. in electronics and telecommunications engineering, Grupo de Ingeniería Telemática, Universidad del Cauca, Popayán, Colombia, Carrera 17 # 19N-166B, Popayán–Cauca, Tel: (+57-2) 8230443, E-mail: [email protected] **** Ph. D in Computer Science, full time professor at Universidad del Cauca, Coordinator of Grupo de Ingeniería Telemática, Popayán, Colombia, Edificio Ingenierías, Tulcán, Oficina 403, Tel: (+57-2) 8209800, ext. 2129, E- mail: [email protected] Revista Ingenierías Universidad de Medellín, vol. 16, No. 30 pp. 195-207 ISSN 1692 - 3324 - enero-junio de 2017/226 p. Medellín, Colombia 196 Julián Eduardo Plazas - Juan Sebastián Rojas - Juan Carlos Corrales Mejorando los sistemas rurales de alertas tempranas a través de la integración de OpenBTS y JAIN SLEE Resumen Actualmente existe una tendencia que combina las características de los servicios Web 2.0 y los servicios de telecomunicaciones, conocida como Telco 2.0. Estos servicios convergentes se han aplicado exitosamente en sistemas de alertas tempranas, proporcionando mayor agilidad y flexibi- lidad en la prestación de servicios. Sin embargo, existen varias limitantes que no permiten el despliegue de servicios convergentes en las zonas rurales de países en vía de desarrollo, como la falta de disponibilidad de una ngn (Next Generation Network), la ausencia de tecnología avanzada y la falta de recursos para inversión. Este artículo propone una arquitec- tura de integración entre jain slee y OpenBTS para sistemas rurales de alertas tempranas. Se evalúa el prototipo implementado con un caso de estudio específico al enviar advertencias Telco 2.0 a los cafeteros colom- bianos cuyas plantaciones puedan verse afectadas por la roya, una de las enfermedades más peligrosas para la producción de café. Palabras clave: jain slee, OpenBTS, integración, sistema de alertas tempranas, servicios convergentes. Revista Ingenierías Universidad de Medellín Improving Rural Early Warning Systems through the Integration of OpenBTS and JAIN SLEE 197 INTRODUCTION Currently, there is a trend in which the policies and efforts implemented by emergency managers are being focused on decreasing their response time before emergency situ- ations. With this objective in mind, different methods have been proposed, among which prevention and early detection of risk situations are the most important. This new paradigm seeks to leverage the most popular technologies nowadays, such as telecommunications and Web 2.0 services that offer an important advantage in the dissemination of information due to the large number of people who use such tech- nologies, although not being centered in emergency response [1]. Within the Web 2.0 services, social networks like Facebook and Twitter can be very useful for emergency management by sharing enormous amounts of multimedia information, like videos and pictures, to hundreds of thousands of users in a matter of seconds [1]. Otherwise, in the telecommunications services, mobile services might be the most useful for emergency management since they enable the possibility to communicate the status of risky situations to large amounts of people within a coverage area [2]. Although the differences between Web 2.0 services and telecommunications ser- vices, in the ict (Information and Communication Technologies) a new model known as Telco 2.0 has been defined, proposing the integration of concepts, technologies and services of Web 2.0 with traditional telecommunications’ features. Therefore, the services inside the Telco 2.0 model are known as converged services [3]. The converged environments represent an advantage for early warning systems because they offer improved agility and flexibility in service delivery, i.e., adding Web 2.0 functionalities to traditional telecommunications services not only provides a more efficient dissemination of warnings, it also allows to detect and manage them without increasing the system’s complexity. However, rural zones of developing countries present significant difficulties when it comes to provide converged services features, since a Next Generation Network (ngn) is needed for their deployment, and this kind of networks are specially oriented to cities with large amounts of population. Furthermore, the lack of advanced technology and investment resources caused by the absence of industry enterprises which do not find profitable outcomes when investing in these areas. This makes the implementation of all kinds of projects a much more difficult task. Notwithstanding, there are several low cost alternatives which would allow to deploy converged services in rural zones, like femtocells, OpenBTS tools and the jain slee specification. Considering the previous statements, this paper presents a proposal focused on the integration of the jain slee specification –a standard and robust environment for Revista Ingenierías Universidad de Medellín, vol. 16, No. 30 pp. 195-207 ISSN 1692 - 3324 - enero-junio de 2017/226 p. Medellín, Colombia 198 Julián Eduardo Plazas - Juan Sebastián Rojas - Juan Carlos Corrales the creation and execution of converged services–, and the OpenBTS architecture sup- ported by Range Networks –which allows the establishment of a gsm network based on open source software and low costs hardware–, in order to develop an early warning system capable of detecting and triggering alerts through three specific services (voice call, sms and email) implemented on the jain slee environment. This paper is arranged as follows. The next section presents a conceptual base of the different technologies related with this work. Section 2 describes the proposed integration architecture. Section 3 presents a detailed description of the experimental prototype and a case study through which the prototype is evaluated. Finally, section 4 presents the conclusions obtained along with possible future works are exposed. 1. BACKGROUND Before describing the architecture and implementation proposed by this paper, it is necessary to define and comprehend some of the most important concepts, components and technologies surrounding the jain slee specification, the OpenBTS tools, and the early warning systems, which will be briefly described as follows. 1.1 JAIN SLEE Specification The jain slee specification is composed by two concepts which must be analyzed in- dependently. Firstly, the Service Logic Execution Environment (slee) which satisfies the requirements needed to run a telecommunications service or application, fulfilling the intrinsic parameters of their nature, such as low latency and high performance. These capabilities also allows the slee to support the execution and deployment of converged services, by combining web and telecommunications attributes, creating more complex and dynamic services. The second concept is Java api for Integrated Networks (jain) standard. This standard defines a set of Javaapi aimed at developing telecommunication services, including aspects ranging from signaling and call control, to the availability of high-level programming interfaces, ensuring that services can be deployed seamlessly, regardless of the network technologies. Therefore, these api must provide three principles: service portability, network convergence and access to network resources [4-5]. Considering the analysis of these concepts, it is not difficult to understand how the jain slee [6] specification defines a standard execution environment for service logic, and specifies the manner in which robust converged
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